Sold a contract deal to me and didn't deliver

On the 3rd of August confirmation of success was sent for application for contract which involved phones being delivered. Contract sent via email on the 3rd awaiting delivery, standard 3-7 business working days. 8th of August I received an SMS to say the delivery would be delayed due to no stock of the phones promised in contract. No contact number or reply option available. 20 August email was sent to customer care email address to ask for an update. That email was responded to the following day asking for confirm my personal details and details stated on contract, which was rep**** to immediately to get the update I'm awaiting. That email was then forwarded to Mondo, who sold the contract to me on the 3rd of August. They then rep**** saying they will forward the email to the relevant department. It is now the 29th of August and I have yet not had any response or updates regarding the cellphones I signed a contract for. Terrible, terrible terrible service. Why bother selling contract deals that involve phones that is apparently out of stock? Ridiculous.